Method of forming and applying ring-liners to can ends



A. L. KRONQUEST.

METHOD OF FORMING AND APPLYING RING LINERS T0 CAN ENDS. APPLICATIONFILED SEPT. 3. 1918.

1,372,961. Patented Mar.29,1921.

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Chimney;

A. L. KRONQUEST. METHOD OF FORMING AND APPLYING RING LINERS T0 CAN ENDS.

' APPLICATION FILED SEPT. 3, I918. 1,372,961 Patented Mar. 29,1921.

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A. L. KRONQUEST. METHOD OF FORMING AND APPLYING RiNG LINERS T0 CAN ENDS.

- APPLICATlON FILED SEPT-3,1918. 1,372,961. Patented Mar. 29, 1921.

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Zlvwemtoz W-Lbmcm I /%d and the can end may be rejected.

' UNITED, STATES PATENT OFFICE...

ALFRED LEE KRONQUEST, or CHICAGO, rumors,- AssIeNoR r0 coN'rINENrAL cANcoNrANY, me, or sYRAcUsR, NEW YORK, A oonroRA-rroN on NEW YORK,

Specification of Letters Batent.

Patented Mar. 29, 1921.

Application filed September 3, 1918. Serial No. 252.391. 7

To all whom it may concern:

Be it known that I, ALFRED LEE I{RON-' QUEST, a citizen of the UnitedStates, residing at Chicago, in the county of Cook, State of Illinois,have invented certain new and useful Improvements in Methods of Formingand Applying Ring-Liners to Can Ends, of which the following is adescription, reference being had to the accompanying drawing and to thefigures of reference marked thereon.

The invention relates to new and useful improvements in the method offorming and applying ring liners to metal can ends, and moreparticularly a paper ring liner to a can end having the peripheral edgethereof formed with a curl to facilitatethe stacking of the can ends andthe forming of the flange of the can end and the can body into a doubleseam.

An obj ect'of the invention is to provide a end is used as a cooperatingelement in the forming of thering liner.

A further object of the invention is to provide a method of forming andapplying ring liners to can ends having the peripheral edge thereofcurled, wherein the edge of the metal of the can end is used asacoeperating element in the final cutting of the ring liner, so that thering liner conforms in outline to the shape of the can end to which itis applied, and so that the ring liner may be applied to the can endsimultaneously with the cutting thereof.

A further object of the invention is to provide a method of forming andapplying ring liners to can ends, wherein the edge of the can endsubsequently rolled into a double seam is utilized in the final cuttingof'the ring liner, so that a failure to out the material forming thering liner at any point indicatesthat the curled flange is imperfect Astill further object of the invention is to provide a method of formingand applying ring liners to can ends, wherein an ad hesive material maybe first applied to the groove in'the can end which receives the ringliner and in which the edge of the metal forming the curl 'on the canend is utilized in the final cutting of the ring liner,

so that the cooperating means may seat the against the adhesivematerial.

liner in the groove in the can end and In the drawings Flgure 1 is aview showin more orless diagrammatically and in vertical section, an'

apparatus for carrying out my method; 1* 1g. 2 1s a-vlew partly in planand partly 1n sect1on of the same;

Fig. 1s a view partly in section andpartly n slde elevation centrallythrou h the cutting station and at right angles to t e View shown inFig. 1;

Flg. 4 1s a view in perspective showing the final cutting of the paperstrip and the seatlng of the finished rlng liner in the groove in thecan end;

Fig. 5 1s a transverse sectional view showngthe positlon of the partsjust as the liner is first severed from the paper strip; and

F1g. 6 1s .a view showing the liner seated in the groove in the can end.

rolling of the edge of the can end and the V flange on the can body intoa double seam.

The ring liners are preferably made of 'paper, although any othersuitable subbe accomplished by pressing the paper against the raw edgeof the metal formlng the curled edge of the can end. By pressing thepaper against the edge of the metal, said metal edge serves as a cuttingmeans operating to perform the final severing of the ring liner from thepaper'strip. ThlS pressure is preferably applied at one or more pointsand progressively from these points in a circumferential direction alongthe ed e of the metal and may be ap lied by rolling balls along thesurface of t e paper, which balls are caused to press the paper againstthe edge of the metal, thus causing the cutting of the paper strip toform the ring liner. The cutting means not only severs the paper tofinish the ring liner, but forces the cut ring liner into the groove inthe can end. The groove referred to is formed by an inner shoulderimpressed in the metal forming the can end and the curled edge of thecan end and is of the usual construction.

The inner diameter of the ring liner may be of such dimensions that theliner will frictionally engage the inner shoulder of the groove and holdthe liner in place or the curled edge of the can end may operate to holdthe ring liner in place, but I prefer to use other means to insure thering liner being held firmly against the bottom of the groove in the canend and insure the liner remaining attached to the cover even though itbe roughly handled, as, for example, the dropping of the same on thefloor of the packing house. My preferred means consists in applying anadhesive material either to the metal at the bottom of the groove on thecan end or to the ring liner, so that the ring liner when placed in thegroove will be held therein by the adhesive material.

By my improved method of forming and applying ring liners to can ends,it will be obvious that, if the edge of the metal forming the can end,has a cut out section or depression or is defective in any other manner,so that the can end when secured to the can body is liable to produce aleak, this defect in the edge of the metal will prevent the completesevering of the material forming the ring liner, so that the defect isreadily detected and the can end may be rejected.

The invention will perhaps be made more clea by reference to 'theaccompanying drawings, which show more or less diagrammatically, anapparatus which may be utilized for carrying out my improved method.

The can ends are indicated at E in the drawings. These can ends areplaced in a stack 1, carried by suitable frame-work and are adapted tobe fed one at a time from the stack holder by means of ,a sliding bar 2,whichmay be operated by a suitable lever 3 connected to the operatingmechanism of the machine. The can ends are taken one at a time from thestack and by the first forward movement of the bar 2 will place the canend at a station where adhesive material may be applied to the bottom ofthe groove in the can end at one or more points. The can end E isindicated as at the station for applying the adhesive material. This maybe accomplished by suitable brushes ie-4 carried by a cross -head 5, andthese brushes are fed with a suitable liquid adhesive material bynozzles 6-6. The can ends receive a drop of liquidadhesive at each pointdirectly beneath the brushes. The reciprocating bar,2

is formed with a yielding dog 7, which engages the can end at the stackand carries it tothe position underneath the brushes. The table orsupport along which the can ends move 15 provided with detaining clips8-8, which hold the can ends in proper position beneath the brushes andprevent the return of the can end with the bar when it moves back toengage and bring forward another can end. On this backward movement ofthe bar a second yielding dog 9 engages the can end indicated at E inFig. 3, and moves the same forward to the position indicated at E whichis directly over a vertically reciprocating supportlng plunger 10. Thisplunger 18 carried by a stem 11, which slides in the frame and saidsupporting plunger may be moved up and down by a lever 12, operated by acam 13 on the shaft 14.

The strip of material from which the ring liners are made is indicatedat P in the drawings. Said strip of material is fed intermittently byfeed rolls 14'. which are operated in any suitable way. The stri ofmaterial first passes beneath a die WllCll cuts a disk from the paperforming the inner edge of-the ring liner. This die is indicated in Fig.l. at 15. Said die is carried by a suitable reciprocating plunger 16,operated by a lever l7. and a spring 18. Cooperating with the. die 15 isa second sleeve die 19. The disks as they are cut from the strip ofpaper pass down through the sleeve die 19 and will be stacked one uponthe other and this greatly facilitates the handlin of the paper disks.The paper strip P is then fed forward by the feedin rolls 14 over theplunger support 10 and the can end E thereon and the center of theopening formed in the paper strip is brought into exact re istrationwith the center of the can end. lhe can end is held in a predeterminedposition on this plunger support by spring retaining fingers 20, seeFig. 2. Directly above the lunger support 10 is a rotating head 21. Wich is provided with a series of balls 22. These balls are supported onthe head so that they may rotate freely. As shown in Fig. 2 of thedrawings, I prefer to use four balls. After the paper strip is broughtinto register with the can end the plunger support 10 is raised, so thatthe paper strip is brought against the sharp metal edge formed by thecurl e in the can end E. As the head rotates the balls are pressedagainst the paper strip and the pressure of the ball forces the stripagainst the sharp metal edge of the can end and this pressure shiftswith the movement of the ball along the peripheral edge of the can end.The pressure of the ball against the paper strip and the paper stripagainst the edge of the metal causes the metal edge to sever the paperand thus forms the outer edge or the ring liner. which, of course,

finishes the ring liner. The position of the ball and the diameter ofthe same is such as not only to cause a cutting of the paper strip toform the ring liner, but the ball places the cut ring liner in thegroove in the can end. This groove in the can end is formed by theshoulder e which is impressed in the cover and the outer curled edge.The groove is of the usual construction. The edge is curled in the usualmanner to facilitate the stacking of the can ends and to facilitate therolling of the can end and flange on the can body into a double seam.The ring liner as it is seated inthe groove comes into contact with theadhesive material and will be firmly held in the groove, so that thering liner will not be dislodged therefrom even by the rough handling ofthe cover-as the dropping of the same upon the floor of the packinghouse.

After the liner has been formed and placed in the groove in the can end,the

plunger support then drops and the paper strip is again fed forwardanother step. If the edge of the metal-is cut out or depressed or is inany other way defective,

' then the paper strip would not be cut at the point where the defectoccurs and the ring liner clinging to the paper strip enables theoperator to readily detect the imperfect can end, so that it may berejected. The ring liner is indicated at P in the drawings.

It will be understood that the apparatus described above may be changedin many respects, and at the most is only one way of carrying out myimproved method, which consists broadly in utilizing the metal of thecan end as a cooperating element in the final cutting of the ring linerand the applying of the ring liner to a can end at the station and atthe time when said ring liner is cut.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is: a

1. The method of forming and applying paper liners to a metal can endhaving a laterally projecting flange which consists in placing the stripof paper against the edge 'of the can end,'and pressing the stripagainst the edge of the metal forming the flange at one or more points,and progressively shifting the pressure from said point or points alongthe edge of the metal for severing the paper from the strip.

2. The method of forming and applying ring liners to metal can ends,which consists in cutting a paper strip to form the inner edge of thering liner, placing the strip with the center of the opening thus formedin register with the center of a can end having its edge curled, andpressing the paper strip against the edge of the metal forming the curlto sever the same, thus forming the outer edge of said liner.

3. The method of forming and applying ring liners to metal can ends,which consists in cutting a paper strip to form the inner edge of thering liner, placing the strip with the center of the opening thus formedin register with the center of a can end having its edge curled,pressing the paper strip against the edge of the metal forming the curlto sever the same, thus forming the outer edge of said liner, andutilizing the pressing means for seating the finished liner on the canend. 7

4. The method of forming and applying ring liners to metal can ends,which consists in placing a paper strip over the inner face of a can endhaving its edge curled, pressing the paper strip against the edge of themetal forming the curl at one or more points and progressively shiftingthe pressure from said point or points along the edge of the metal forsevering the paper from the paper strip to form the ring liner.

- In testimony whereof, I aflix my signature in the presence of twowitnesses.

ALFRED LEE KRONQUEST.

Witnesses:

W. M. NoRroN, EARL F. PHILLIPS.

